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Power Systems

Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

 45°
 36°
 42°
 90°

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Power Systems
Advantage/s of per unit system as compare to absolute system?

 calculation time is less
 memory required is less
All of these
 only one equation is required

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Power Systems
Surge impedance loading of a transmission line can be increased by

 addition of lumped capacitance in series
 increasing its voltage level
 addition of lumped inductance in parallel
 both 1 and 3

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Power Systems
Transmission lines are transposed to reduce

 interference with neighbouring communication lines
 skin effect
 ferranti effect
 proximity effect

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Power Systems
On what factors does the selection of a water turbine depend

  All of above.
 Speed.
 Nature of load.
 Working head.

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Power Systems
Which of the following effects are associated with transmission line

 corona effect
 skin effect
 ferranti effect
All of these

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